Cited by 71Alzheimer's disease research and treatmentsDementia and Cognitive Impairment ResearchNeuroinflammation and Neurodegeneration Mechanisms

Caspase-cleaved tau exhibits rapid memory impairment associated with tau oligomers in a transgenic mouse model

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Kim, YoungDoo, Choi, Hyunwoo, Lee, WonJae, Park, Hyejin, Kam, Tae-In, Hong, Se-hoon, Nah, Jihoon, Jung, Sunmin +8 more·2016·Neurobiology of Disease

Abstract

In neurodegenerative diseases like AD, tau forms neurofibrillary tangles, composed of tau protein. In the AD brain, activated caspases cleave tau at the 421th Asp, generating a caspase-cleaved form of tau, TauC3. Although TauC3 is known to assemble rapidly into filaments in vitro, a role of TauC3 in vivo remains unclear. Here, we generated a transgenic mouse expressing human TauC3 using a neuron-specific promoter. In this mouse, we found that human TauC3 was expressed in the hippocampus and cortex. Interestingly, TauC3 mice showed drastic learning and spatial memory deficits and reduced synaptic density at a young age (2-3months). Notably, tau oligomers as well as tau aggregates were found in TauC3 mice showing memory deficits. Further, i.p. or i.c.v. injection with methylene blue or Congo red, inhibitors of tau aggregation in vitro, and i.p. injection with rapamycin significantly reduced the amounts of tau oligomers in the hippocampus, rescued spine density, and attenuated memory impairment in TauC3 mice. Together, these results suggest that TauC3 facilitates early memory impairment in transgenic mice accompanied with tau oligomer formation, providing insight into the role of TauC3 in the AD pathogenesis associated with tau oligomers and a useful AD model to test drug candidates.

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Crossref · 10.1016/j.nbd.2015.12.006

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Authors
Kim, Y., Choi, H., Lee, W., Park, H., Kam, T.-I., Hong, S.-H., Nah, J., Jung, S., Shin, B., Lee, H., Choi, T.-Y., Choo, H., Kim, K.-K., Choi, S.-Y., Kayed, R., & Jung, Y.-K.
Affiliations
  • Seoul National University (KR)
  • Chonnam National University (KR)
  • The University of Texas Medical Branch at Galveston (US)
Corresponding author
Jung, Yong-Keun
Venue
Neurobiology of Disease
Publisher
Elsevier BV
Published
2016-03
Volume
87
Pages
19-28
ISSN
0969-9961 (ISSN-L)
OpenAlex
W2221779674
Cited by
71
References
48
Citations by year
2026: 3 · 2025: 8 · 2024: 5 · 2023: 6 · 2022: 5 · 2021: 9 · 2020: 8 · 2019: 4 · 2018: 9 · 2017: 10 · 2016: 3 · 2014: 1
FWCI
5.35
Type
journal article
Language
en
Open access
Locations
  • Neurobiology of Disease (publishedVersion)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • Seoul National University Open Repository (Seoul National University) (submittedVersion)
Funders
  • Global Research Laboratory (NRF-2010-00341)
  • CRI (NRF-2013R1A2A1A01016896)
  • Ministry of Education, Science and Technology
  • AD
  • Kwang-Dong Pharmaceutical (KD-3344-20130024)
Topics
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
Keywords
tau oligomers, Alzheimer's disease, memory impairment, learning deficits, synaptic density, hippocampus, tau aggregation, methylene blue, Congo red, rapamycin, transgenic mouse model, neurofibrillary tangles
MeSH terms
Animals, Avoidance Learning, Brain, Disease Models, Animal, Female, Humans, Male, Memory Disorders, Mice, Transgenic, Neurons, tau Proteins, Nootropic Agents, Maze Learning, Sirolimus, Caspases, Recognition, Psychology, Cell Line, Tumor, Dendritic Spines, Protein Multimerization, Spatial Memory

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